Blast control and nitrogen management in lowland rice cultivation
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/6746 |
Resumo: | Nitrogen timing and control of fungal diseases are cultural practices in lowland rice production. The objective of this study was to determine appropriate timing of N application and adequate rate of seed treatment with pyroquilon fungicide in lowland rice. The 90 kg ha-1 N application timing were alloted as follows: total at sowing (T1); 1/3 at sowing, 1/3 at active tillering and 1/3 at panicle initiation (T2); 1/2 at sowing and 1/2 at active tillering (T3); 1/2 at sowing and 1/2 at panicle initiation (T4); 2/3 at sowing and 1/3 at active tillering (T5); 2/3 at sowing and 1/3 at panicle initiation (T6); and 1/3 at sowing and 2/3 at the start of tillering (T7). Fungicide treatments were 0, 200, and 400 g active ingredient pyroquilon per 100 kg seed. Grain yield was significantly affected with timing of N application and fungicide treatments. Nitrogen treatment also affected significantly straw yield, and N uptake in grain. Maximum grain yield was obtained with treatments T2 and T3. Fungicide treatment of 200 g per100 kg of seed, produced significantly higher yield as compared to the control. |
id |
EMBRAPA-4_28d4030629a304956772616f4d406caa |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/6746 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Blast control and nitrogen management in lowland rice cultivationControle de brusone e manejo de nitrogênio em cultivo de arroz irrigadoOryza sativa; yield; disease controlOryza sativa; rendimento; controle de doençasNitrogen timing and control of fungal diseases are cultural practices in lowland rice production. The objective of this study was to determine appropriate timing of N application and adequate rate of seed treatment with pyroquilon fungicide in lowland rice. The 90 kg ha-1 N application timing were alloted as follows: total at sowing (T1); 1/3 at sowing, 1/3 at active tillering and 1/3 at panicle initiation (T2); 1/2 at sowing and 1/2 at active tillering (T3); 1/2 at sowing and 1/2 at panicle initiation (T4); 2/3 at sowing and 1/3 at active tillering (T5); 2/3 at sowing and 1/3 at panicle initiation (T6); and 1/3 at sowing and 2/3 at the start of tillering (T7). Fungicide treatments were 0, 200, and 400 g active ingredient pyroquilon per 100 kg seed. Grain yield was significantly affected with timing of N application and fungicide treatments. Nitrogen treatment also affected significantly straw yield, and N uptake in grain. Maximum grain yield was obtained with treatments T2 and T3. Fungicide treatment of 200 g per100 kg of seed, produced significantly higher yield as compared to the control.Informações sobre práticas culturais, tais como a aplicação de N e o controle de doenças causadas por fungos, em solo de várzea do Brasil são insuficientes. O objetivo deste trabalho foi avaliar a resposta do arroz irrigado a épocas de aplicação de N e ao tratamento das sementes com fungicida no controle de brusone. Aplicaram-se 90 kg ha-1 de N da seguinte forma: todo no plantio (T1); 1/3 no plantio, 1/3 45 dias após o plantio e 1/3 na iniciação do primórdio floral (T2); 1/2 no plantio e 1/2 45 dias após o plantio (T3); 1/2 no plantio e 1/2 na iniciação do primórdio floral (T4); 2/3 no plantio e 1/3 45 dias após o plantio (T5); 2/3 no plantio e 1/3 aplicado na iniciação do primórdio floral (T6) e 1/3 no plantio e 2/3 20 dias após o plantio (T7). O fungicida pyroquilon foi aplicado nas doses de 0, 200 e 400 g de ingrediente ativo por 100 kg de sementes. A produção de grãos foi influenciada significativamente pela época de aplicação de N e pelo tratamento de fungicida. A aplicação de N influenciou significativamente a matéria seca da parte aérea e a acumulação de N nos grãos. A produção máxima de grãos foi obtida pelos tratamentos T2 e T3. O tratamento com 200 g de fungicida por 100 kg de sementes aumentou significativamente a produção de grãos, em relação à testemunha.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFageria, Nand KumarPrabhu, Anne Sitarama2004-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6746Pesquisa Agropecuaria Brasileira; v.39, n.2, fev. 2004; 123-129Pesquisa Agropecuária Brasileira; v.39, n.2, fev. 2004; 123-1291678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6746/3802info:eu-repo/semantics/openAccess2014-07-02T19:22:50Zoai:ojs.seer.sct.embrapa.br:article/6746Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-07-02T19:22:50Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Blast control and nitrogen management in lowland rice cultivation Controle de brusone e manejo de nitrogênio em cultivo de arroz irrigado |
title |
Blast control and nitrogen management in lowland rice cultivation |
spellingShingle |
Blast control and nitrogen management in lowland rice cultivation Fageria, Nand Kumar Oryza sativa; yield; disease control Oryza sativa; rendimento; controle de doenças |
title_short |
Blast control and nitrogen management in lowland rice cultivation |
title_full |
Blast control and nitrogen management in lowland rice cultivation |
title_fullStr |
Blast control and nitrogen management in lowland rice cultivation |
title_full_unstemmed |
Blast control and nitrogen management in lowland rice cultivation |
title_sort |
Blast control and nitrogen management in lowland rice cultivation |
author |
Fageria, Nand Kumar |
author_facet |
Fageria, Nand Kumar Prabhu, Anne Sitarama |
author_role |
author |
author2 |
Prabhu, Anne Sitarama |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Fageria, Nand Kumar Prabhu, Anne Sitarama |
dc.subject.por.fl_str_mv |
Oryza sativa; yield; disease control Oryza sativa; rendimento; controle de doenças |
topic |
Oryza sativa; yield; disease control Oryza sativa; rendimento; controle de doenças |
description |
Nitrogen timing and control of fungal diseases are cultural practices in lowland rice production. The objective of this study was to determine appropriate timing of N application and adequate rate of seed treatment with pyroquilon fungicide in lowland rice. The 90 kg ha-1 N application timing were alloted as follows: total at sowing (T1); 1/3 at sowing, 1/3 at active tillering and 1/3 at panicle initiation (T2); 1/2 at sowing and 1/2 at active tillering (T3); 1/2 at sowing and 1/2 at panicle initiation (T4); 2/3 at sowing and 1/3 at active tillering (T5); 2/3 at sowing and 1/3 at panicle initiation (T6); and 1/3 at sowing and 2/3 at the start of tillering (T7). Fungicide treatments were 0, 200, and 400 g active ingredient pyroquilon per 100 kg seed. Grain yield was significantly affected with timing of N application and fungicide treatments. Nitrogen treatment also affected significantly straw yield, and N uptake in grain. Maximum grain yield was obtained with treatments T2 and T3. Fungicide treatment of 200 g per100 kg of seed, produced significantly higher yield as compared to the control. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-02-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6746 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6746 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6746/3802 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.39, n.2, fev. 2004; 123-129 Pesquisa Agropecuária Brasileira; v.39, n.2, fev. 2004; 123-129 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
_version_ |
1793416653023739904 |